In the wake of recent 2020 M_L ≥ 5.5 earthquakes in Croatia, Zagreb M_L5.5 and Petrinja M_L6.2, the insufficient instrumental network as well as the lack of regional ground motion prediction equation (GMPE) were identified as the drawbacks of our engineering community. The former is related to the quality definition of active seismicity (most of the instruments are installed in the southern part of Croatia with fewer installed around Zagreb in the northwestern part of Croatia), and the latter is related to the proper number of strong motion recordings. In Croatia, there is a sparse database of ground motion recordings for moderate earthquakes which makes a well-designed ground motion selecting procedure hardly achievable. Following this, strong motion BSHAP database for empirical estimation of the response spectrum based on Fourier amplitude spectrum and the ground motion duration using Random Vibration Theory approach adjusted to source, propagation, and local site conditions was used. Regionally adjusted ground motion model estimations for the M_L6.2 Petrinja 2020 earthquake scenario are comparable with the previously published GMPEs models for this part of Europe and for the Western part of North America. However, model-to-model variability and uncertainties in local GMPE exceeded those of global GMPEs and are influenced by statistically less stable and more limited datasets. Model is applicable for magnitudes up to M_w6.5 and Joyner-Boore distances up to 200 km with usable frequency range between 0.4 and 33 Hz. The presented model is a step forward toward performing hybrid-empirical seismic hazard studies in areas with sparse ground motions such as the region of Croatia.

在克罗地亚、萨格勒布 M _L 5.5 和彼得里尼亚 M _L最近发生 2020 M _{L ≥ 5.5 级地震之后}6.2，仪器网络不足以及区域地面运动预测方程（GMPE）的缺乏被确定为我们工程界的缺点。前者与活动地震活动的质量定义有关（大部分仪器安装在克罗地亚南部，克罗地亚西北部萨格勒布周边安装的仪器较少），后者与强震记录的适当数量有关. 在克罗地亚，中等地震地面运动记录的数据库很少，这使得设计良好的地面运动选择程序很难实现。按照此，强震 BSHAP 数据库用于基于傅里叶振幅谱和地面运动持续时间的响应谱的经验估计，使用随机振动理论方法调整到震源、传播和当地现场条件。M 的区域调整地面运动模型估计_L 6.2 Petrinja 2020 地震情景与之前发布的欧洲这部分地区和北美西部地区的 GMPE 模型具有可比性。然而，本地 GMPE 中模型到模型的可变性和不确定性超过了全球 GMPE，并且受到统计上不太稳定和更有限的数据集的影响。模型适用于高达 Mw 6.5 的震级_和高达 200 公里的 Joyner-Boore 距离，可用频率范围在 0.4 和 33 赫兹之间。所提出的模型是朝着在地面运动稀疏的地区（例如克罗地亚地区）进行混合经验地震危险研究迈出的一步。